Reverse lock slider for separable fasteners



Jan. 7, 1941. L. H. MORIN ET AL 2,228,147

REVERSE LOCK SLIDER FOR SEPARABLE FASTENERS Filed Jail. 24, 1959INVENTOR Lou/5' H. Ma/Fwv BY 0mm? MAW/MSW) ATTORN E Patented Jan. 7,1941 I g s PATENT orrlce REVERSE LOCK SLIDER FOR SEPARABLE FASTENERSLouis H. Morin and Davis Marinsky, Bronx, N. Y., assignors to WhitehallPatents Corporation, Bronx, N. Y., a corporation of New York ApplicationJanuary 24, 1939, Serial No. 252,534

7 Claims. (01.24-2055) This invention relates to separable fastenersstrain is taken up substantially entirely by the employing stringers andparticularly to what is pin element without transmission to the fingertermed alock slider for fasteners of this kind piece or pull. forretaining the slider against movement on the In Figs. land 2 of thedrawing is shown one 5 stringers. More particularly, the inventionrelates embodiment of the invention; and in Fig. l, is 5 to a reversiblepin lock slider of this type wherein illustrated at 10,- Ifla a part oftwo stringers havthe lock pin or pin element is capable'of moveingcoupling links or scoops ll, Ila, attached to ment into engagement withone of the stringers adjacent edges thereof in the usual manner. At whenthe pull is arranged adjacent the slider wall 12 is shown a sliderhaving aprojecting' bearing in either of two positions. The novelfeatures member l3 on the upper wall thereof intermedi- 10 of theinvention will be best understood from the ate the narrow and wide endsof the slider; said following description when taken together with wallbeing also provided with an aperture H the accompanying drawing, inwhich certain emadjacent the bearing 13 and at one side thereof.

i bodiments of the invention are disclosed, and The bearing I3 isapertured to receive a pivot pin 15 in which the separate parts aredesignated by l5 which also passes through or is coupled with 15suitable reference characters in each of the views, the forked end iiiof a finger piece or pull H, the and in which: pin I5 forming a pivotaxis around which the Fig. 1 is a face view of one form of slider whichpull II is free to swing as indicated in the full we employ showing thesame arranged upon a and dotted line positions of Fig. 2 of the drawing.

UNITED STATE '20 portion of two stringers with part of the com Thepositions extending in opposite directions struction broken away. alongthe slider wall may be referred to as ter- Fig. 2 is a partial sectionon the line 2-2 minal positions of the pull. The pin may be seof Fig. 1,and cured either in the bearing I3 or in the forked Fig. 3 is aperspective view of a modified form end It of the pull as may bedesired. At one side of pin mounting which .we employ. of the pull l1and in close proximity to the ar- In the construction of reversible locksliders rangement of the. pin IS'therein is an outwardly of the classunder consideration, it has been the projecting pin l8 forming a bearingand mountpractice to employ locking elements arranged on ing for a pinor lock element I9 having a more two surfaces of a pull or in more casesto pro or less reduced or pointed end 211 which is adapted vide sometypeof camming means for firmly reto extend into the channel 2| of theslider to taining a lock element in operative position. In engage thelinks of one of the stringers, for exsuch constructions, the lockingmeans has not ample, the links Ila of the stringer Illa in" the provedto be satisfactory or fool-proof in that subconstruction shown. jectingthe stringers to lateral stress tending to At this time it will beunderstood, however, that move the slider longitudinally thereof wouldinthe element I9 may be disposed oneither side of $5 variably cause thecamming means or the pin the pull, or if' desired, two of such elementsmay means integral with the pull to be forced out of be employed andso-mounted as to provide a operative position. This is especially truewhen staggered arrangement of the pointed ends 20 to the pull isarranged in the so-called reverse posiengage the staggered arrangementof links on 40' tion; that .is to say, when the pull extends in opposedstringers as will be apparent. The walls 0 the direction of the wide endof the slider. It of the aperture l4 are flared outwardly so as to isthe purpose of the present invention to provide receive the element l9when the finger piece or a pin locking means which will overcome thepull I1 is arranged substantially parallel to the objections to devicesof the kind now commonly slider in either of the locked or terminalpositions employed in providing a pin element for engaging thereof as isclearly indicated in Fig. 2 of the 45 the fastener stringers which ismovably supported drawing.

' upon the pull and adapted to be moved into and In the use of thedevice as shown in Figs. 1 and out of the channel of the slider. Thepull serves 2, it will be understood that when a stress or primarilytonmove the pin element into its operastrain on the stringers occurswhich would tend tive and inoperative positions, while at the same tomove the slider longitudinally of the stringers time leaving the pinelement free for independent to open the same, the link or linksengaging the movement with respect to the finger piece or pull pointedend 2|) of the lock pin or element IS in theseveral positions thereof.In other words, will causesaid end to be jammed between the link thestrain upon the pin element when the slider and the top wall of theslider especially as shown is subjected to accidental opening by stressor in the full line position of the parts in Fig. 2

whereas in the reverse dotted line position, the

pointed end portion 20 of the elements which swings on its pivot l8 willbe forced against the lock the slider against movement. mounting of theelement l9 provides a free and independent movement of the elementwithout transmitting movement to the pull contrary in this respect tothe conventional pin lock sliders where the pin lock element is'anintegral part of or is rigidly united with the pull.

In Fig. 3 of the drawing a slight modification of the structure shown inFigs. 1 and 2 is illustrated. This modification consists simply inproviding a recess 22 in one side of a finger piece or pull Ila at theforked end lia thereof and in utilizing a pin element l9a of a thicknesscorresponding to the depth of the recess 22 so that the outer surface ofthe element I941 will be in alinement with the outer side surface of thepull proper.. .The element I90. is pivoted on a pin I8a protruding -fromone of the forked ends Ilia. Whilea lal; e clearance is shown betwen thepivot end of the element I911 and the wall 23 of the recess 22 in theaccompanying. drawing, this is merely for clearness of illustration; andit will be understood that the wall 23 may be arranged in closeproximity to the element I911 and even conform with the rounded contourof the pivoted end thereof.

From the foregoing it will appear that in the construction disclosed,the lock element may be said to have a free and independent movementwith respect to the finger piece or pull especially in the movementthereof into locked position;

whereas a coupling is provided between the ele ment and the finger pieceor pull to positively withdraw the element from its locked positionautomatically in the operation of raising the finger piece or pull inthe manual movement of the slider longitudinally of the stringers ineither direction. In this connection, it will be understood that it isnot essential that the finger piece or pull be fully raised in order toaccomplish the operation of the slider. Sufficient clearance will beallowed between the lock element and the links to disengage the linkswhen the finger piece or pull is raised sufiiciently to grasp the samein the desired operation. The latter will be understood when it isrealized that the greatest movement is attributed to the lock element inthe early stages of the lifting operation of the pull, whereas thedegree of this lifting motion decreases as the pull is brought into theperpendicular position.

It will be understood that our invention is applicable for use inconnection with various forms of metallic fasteners as well as in theuse of metallic sliders upon the non-metallic or thermoplasticstringers. In fact, the entire slider may be composed of thermoplasticmaterial where this type of a locking means is desirable on allthermoplastic fasteners.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent, is:

1. A lock slider for separable fastener stringers of the characterdescribed, said slider having spaced walls joined at one end by aconnecting web forming diverging channels therebetween, bearing formingmeans on the outer surface of one top wall of said slider, a pullpivotally secured at one end thereof to said bearing forming meansandadapted when arranged in either of two terminal positions to extendalong the top wall of the slider in parallel relation thereto, the

top wall of said slider having an aperture therein in spaced relation toand in transverse alinement with said' bearing forming means, said pullbeing provided with a movable lock element registering with the aperturein said slider wall and adapted in either terminal position of saidpullto operatively extend into the channel of said slider, said lockelement comprising a substantially wedgeshaped member pivotally securedto one side edge of said pull, and the end walls of the aperture in saidslider being sharply beveled to conform with the wedge-like contour ofsaid lock element when in the locked position.

2. A look slider for separable fastener stringers of the characterdescribed, said slider having spaced walls joined at one end by aconnecting web forming diverging channels therebetween, bearing formingmeans on the outer surface of one top wall of said slider, a pullpivotally secured at one end thereof to saidbearing forming means andadapted when arranged in either of two terminal positions to extendalong the top wall of the slider in parallel relation theretojthe topwall of said slider having an aperture therein in spaced relation to andin transverse alinement with said bearing forming means, said pull beingprovided with a movable lock elementv registering with the aperture insaid slider wall and adapted in either terminal position of said pull tooperatively extend into the channel of said slider, said lock elementcomprising a substantially wedge-shaped member pivotally arranged on aprojecting pin at one side edge of said pull, the side edge of said pulladjacent said pin being recessed to provide arrangement of said lockelement within the boundary defined by the side edges of said pull. 1

3. A lock slider for separable fastener stringers of the characterdescribed, said slider having spaced walls joined at one end by aconnecting web forming diverging channels therebetween, bearing formingmeans on the outer surface of one top wall of said slider, a pullpivotally secured at one end thereof to said bearing forming means andadapted when arranged in either of two' terminal positions to extendalong the top wall of the slider in parallel relation thereto, the topwall of said slider having an aperture therein in spaced relation to andin transverse alinement with said bearing forming means, said pullhaving a movable lock element registering with the aperture in saidslider wall and adapted in either terminal position of said pull tooperatively extend into the channel of said slider, said lock elementcomprising a substantially wedge-shaped member, a pivot coupling forsaid member on said pull between the pivot of the pull and the free endthereof, and the spaced relation of said pivot coupling and the pivotmounting end of said pull being sufficient to provide withdrawal of saidlock element from the channel of said slider when the pull is raisedfrom its terminal position to operate said slider.

4. In a lock slider, a channeled slider body having spaced walls, a pullpivoted at one end thereof to the slider body and movable between twoterminal positions extending in opposite directions along one wall ofthe slider, a tapered lock element, means pivotally coupling saidelement to said pull between the pivot end thereof 'and the free end ofthe pull, said wall of the slider having an aperture adjacent the pivotend 5. In a lock slider, a slider body having spaced walls, a pullpivoted at one end thereof to the slider body and movable between twoterminal positions extending in opposite directions along one wall ofthe slider, a lock element having a wide end and a pointed end, meanspivotally coupling the wide end of said element with said pull betweenthe pivot end thereof and the free end of the pull, said wall of theslider having an aperture adjacent the pivot end of the pull, the otherpointed end of .said lock element extending into said aperture, and thespaced relation of said means and the pivot end of said pull beingsuflicient to provide for the extension of the pivot end of thelock-element through the aperture and under said slider wall in eitherterminal position of the pull.

6. A look slider for separable fastener stringers of the characterdescribed, said slider having spaced walls joined at one end by aconnecting web forming diverging channels therebetween, bearing formingmeans on the outer surface of one top wall of said slider, a pullpivotally secured at one end thereof to said bearing forming means andadapted when arranged in either of two terminal positions to extendalong the top wall of the slider in parallel relation thereto, the topwall of said slider having an aperture therein in spaced relation to andin transverse alinement with said bearing forming means, a lock elementhaving a fixed pivot axis on the pull between the pivot of the pull andthe free end thereof, and said lock element having a portion constantlymaintained in said aperture of the slider wall and adapted in eitherterminal position of said pull to operatively extend into the channel ofsaid slider.

7. A look slider for'separable fastener stringers of the characterdescribed, said slider having spaced walls joined at one end by aconnecting web forming diverging channels therebetween, bearing formingmeans on the outer surface of one top wall of said slider, a pullpivotally secured at one end thereof to said hearing forming means andadapted when arranged in either of two terminal positions to extendalong the top wall of the slider in parallelrelation thereto, the topwall of said slider having an aperture therein in spaced relation to andin transverse alinement with said bearing forming means, said pullhaving a movable lock element registering with the aperture in saidslider wall and adapted in either terminal position of said pull tooperatively extend into the IDUIS H. MORIN'. DAVIS MARINSKY.

